bookmanagemment.aspx.cs

来自「这是一个编好的网上书店系统」· CS 代码 · 共 157 行

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.IO;

namespace BookStore.Admin
{
	/// <summary>
	/// BookManagemment 的摘要说明。
	/// </summary>
	public class BookManagemment : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.HyperLink HyperLink1;
		protected System.Web.UI.WebControls.HyperLink HyperLink4;
		protected System.Web.UI.WebControls.HyperLink Hyperlink9;
		protected System.Web.UI.WebControls.HyperLink HyperLink2;
		protected System.Web.UI.WebControls.HyperLink HyperLink3;
		protected System.Web.UI.WebControls.HyperLink HyperLink5;
		protected System.Web.UI.WebControls.HyperLink Hyperlink7;
		protected System.Web.UI.WebControls.HyperLink Hyperlink8;
		protected System.Web.UI.WebControls.HyperLink HyperLink6;
		protected System.Web.UI.WebControls.Label lbInfo;
		protected Lei.WebControls.PagerDataList pdlBookManage;
		protected System.Web.UI.WebControls.HyperLink Hyperlink10;
		protected System.Web.UI.WebControls.Label lbCount;
		protected System.Web.UI.WebControls.Button btDeleteCoverFile;
		protected System.Web.UI.HtmlControls.HtmlForm Form1;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			if(Object.Equals(Session["UserName"],null))
			{
				Response.Redirect("../Error.aspx");
			}
			else
			{
				if(!RobertSoft.BookStore.User.IsSupervisor(Session["UserName"].ToString()))
				{
					Response.Redirect("../Default.aspx");
				}
				else
				{
					BindData();
				}
			}
		}

		private void BindData()
		{
			string strSql;
			strSql = "select * from BookInfoShortDetailView Order by ID desc";
			DataSet currentDS;
			currentDS = RobertSoft.BookStore.DBClass.DBBaseClass.ExecuteSQLForDS(strSql);
			this.pdlBookManage.DataSource = currentDS.Tables[0].DefaultView;
			this.pdlBookManage.DataBind();
			this.lbCount.Text = "共有 " + currentDS.Tables[0].Rows.Count.ToString() + " 本图书：";
		}
		#region Web 窗体设计器生成的代码
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.pdlBookManage.EditCommand += new System.Web.UI.WebControls.DataListCommandEventHandler(this.pdlBookManage_EditCommand);
			this.pdlBookManage.PageIndexChanged += new System.EventHandler(this.pdlBookManage_PageIndexChanged);
			this.pdlBookManage.DeleteCommand += new System.Web.UI.WebControls.DataListCommandEventHandler(this.pdlBookManage_DeleteCommand);
			this.btDeleteCoverFile.Click += new System.EventHandler(this.btDeleteCoverFile_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void pdlBookManage_DeleteCommand(object source, System.Web.UI.WebControls.DataListCommandEventArgs e)
		{
			int nID = int.Parse(e.CommandArgument.ToString());
			DeleteData(nID);
			BindData();
		}

		private void DeleteData(int nID)
		{
			string strSql = "DELETE FROM [BookInfo] where ID=" + nID;
			try
			{
				RobertSoft.BookStore.DBClass.DBBaseClass.ExecuteSQLCmd(strSql);			
				this.lbInfo.Text = "删除成功";
			}
			catch
			{
				this.lbInfo.Text = "删除失败！";
				return;
			}			
		}

		private void pdlBookManage_EditCommand(object source, System.Web.UI.WebControls.DataListCommandEventArgs e)
		{
			string strUrl;
			strUrl = "ManageBookDetail.aspx?ID=" + int.Parse(e.CommandArgument.ToString());
			Response.Redirect(strUrl);
		}

		private void btDeleteCoverFile_Click(object sender, System.EventArgs e)
		{
			string FilePath;
			
			FilePath = Server.MapPath("\\BookStore\\UpFile").ToString().Trim();
			try 
			{	
				this.btDeleteCoverFile.Enabled = false;
				string[] dirs = Directory.GetFiles(FilePath);
				if(dirs.Length == 0)
				{
					this.lbInfo.Text = "当前目录下已没有文件！";
				}
				else
				{
					foreach (string dir in dirs) 
					{
						File.Delete(dir);
					}
					this.lbInfo.Text = "删除文件成功！";
				}
				this.btDeleteCoverFile.Enabled = true;
			} 
			catch(Exception er)
			{
				this.lbInfo.Text = er.ToString();
			}

		}

		private void pdlBookManage_PageIndexChanged(object sender, System.EventArgs e)
		{
			int pageindex = ((DataGridPageChangedEventArgs)e).NewPageIndex;
			this.pdlBookManage.CurrentPageIndex = pageindex;
			BindData();
		}
	}
}